Mobile charging device



FIG. 1 is a left elevational view of a mobile charging device comprising the new design;

FIG. 2 is a front elevational view;

FIG. 3 is a right elevational view;

FIG. 4 is a back elevational view;

FIG. 5 is a top view;

FIG. 6 is a bottom view; and,

FIG. 7 is a perspective view.

The broken lines shown represent the portions of the mobile charging device that form no part of the claimed design. 

CLAIM The ornamental design for a mobile charging device, as shown and described. 